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Empire gas wall heater shuts off after 1 minute

We just installed an Empire gas wall heater. The pilot lights, but the main burners and fan will only run for about 1 minute and then they shut off. They do not start back up even when we skip the thermostat and make direct contact with the units wires. We vented the unit out the side of the house, with about 1 foot of venting going up the top before the 90* turn. Is this distance inadequate and causing the emergency shut off to trip? If so, how much venting is needed before turning out the side wall? Or must it vent directly up through the roof? Any other things that may be causing this to occur.

Thanks!

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SOURCE: empire wall heater with wall vent pilot light

It sounds like the gas valve is dropping out. Make sure the system is venting the exhaust(no restrictions). Then make sure all your wiring connections in the unit are tight. In a millivolt system if all wiring connections aren't tight and clean your circuit will drop in millivolts and the gas valve will drop out. The gas valve requires a certain millivolt to stay open. I hope I was of some assistance!! Good luck!!

Posted on Nov 29, 2009

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